Teaching methodology for digital pulse width modulation and phase angle control

Abstract

A teaching methodology for digital generation of Pulse Width Modulated signals and phase angle control is proposed in this article. Several different schematics and methods for Pulse Width Modulation and phase angle control are proposed. A sequence of tasks is developed for step-by-step education. The examined logical diagrams are implemented on FPGA device and are tested with USB oscilloscope. The advantages and the limitations of the different schematics are discussed. The use of Pulse Width Modulation and phase angle control for power control as well as for voltage regulation is demonstrated.